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Finding the Third Proportional to 3,987 and 7,626

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Solution

The third proportional to 3,987 and 7,626 is: 14,586.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987 : 7,626 = 7,626 : x
  2. Step 2: Convert to fraction form
    3,987/7,626 = 7,626/x
  3. Step 3: Cross multiply
    3,987x = 7,626 × 7,626
  4. Step 4: Simplify right side
    3,987x = 58,155,876
  5. Step 5: Solve for x
    x = 58,155,876/3,987
  6. Step 6: Final answer
    x = 14,586.37

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.